Improvement in screw-drivers



w. s. KYLE.' Y Screw-Drivers. L NOA-Q 587. l Patented April14,874.

ff 2f. I

Azz-wf- UNITED oSTATES PATENT OFFICE.

vVVILLARD S. KYLE, BLUE ISLAND, ILLINOIS.

IMPRovMENT 1N scREw-Dnlvrns.

Specification forming part of Letters Patent No. 149,587, dated April 14, 1874; application filed February 24, 1874.

To all whom it may concern:

Be it known that I, WILLARD S. KYLE, of Blue Island, in the county of Cook and State of Illinois, have irvented an Improvement in- Screw-Drivers, of which the following is a specification: y.

This invention relates to an improvement in that class of screw-drivers in which the blade, provided with a ratchet, rotates in a socket in the handle, which is provided with a pawl, the object of which is to enable the operator to turn the screw with one hand. The invention consists in a peculiar reversible pawl and lever in combination with the handle, and a blade having a ratchet on its shank, arranged to operate as more fully hereinafter set forth. Figure 1 is a perspective view. Fig. 2 is a longitudinal section at a: c'. Fig. 3 is a cross- `section at y Q/,Figu 2.

In the drawing, A represents the handle, with a metal cylinder, B, secured to its lower end to form a socket fora round shank, C, in which is inserted the base of the blade D. In the periphery of the shank four or more l ratchet-sockets, c, are formed.` E is a lever, pivoted to a stud, b,at the side of the socket B. Under the rear or upper end of the lever is a spring, c. A reversible pawl-stud, d, is inserted through an opening in the socket B in the plane of the notches or sockets a. This pawland the opening for it are square, so that it cannot be turned while in the opening. Its inner end is beveled, as seen in'Fig. 3. A square neck of less thickness than the body is formed near the head, and is received by a fork in the front end ot' the lever. Inserted in one way, the pawl-stud will rotate the blade, but will move with the handle if the latter be -rotated in the opposite direction. Inserted in the reverse way, the movement of the blade will be reversed.

I ain aware of the patent granted to H. L: 

